21. Specification for 105 mm microcopying of technical drawings (single image, A6 size). (31st January 1983) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (12 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
22. Specification for conventional typographical character for legibility tests (ISO test character). (20th July 1967) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (8 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
23. Specification for visual densities of diazo and vesicular second-generation microforms. (28th August 1987) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (8 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
24. Specification for filming of documents. Microfilm 105 mm (Microfiche A6). (31st October 1989) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (10 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
25. Method for determining the resolution obtained in microcopying. (31st July 1990) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (14 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
26. Specification for filming of documents. 16 mm microfilm. (30th November 1989) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (12 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
27. Guide to preparation of microfilm and other microforms that may be required as evidence. (30th April 1991) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (14 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
28. Methods of measuring quality of output of graphic COM recorders. (28th February 1991) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (16 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
29. Micrographics. Microfilming of newspapers for archival purposes on 35 mm microfilm. (30th September 1991) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (16 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
30. Micrographics. First generation silver-gelatin microforms of source documents. Density specifications. (29th November 1991) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (12 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗